X = int(input())

if 400 <= X < 600:
    print('8')
elif 600 <= X < 800:
    print('7')
elif 800 <= X <1000:
    print('6')
elif 1000 <= X < 1200:
    print('5')
elif 1200 <= X < 1400:
    print('4')
elif 1400 <= X < 1600:
    print('3')
elif 1600 <= X < 1800:
    print('2')
else:
    print('1') X = int(input()) X int(input()) int input() input if 400 <= X < 600:
    print('8')
elif 600 <= X < 800:
    print('7')
elif 800 <= X <1000:
    print('6')
elif 1000 <= X < 1200:
    print('5')
elif 1200 <= X < 1400:
    print('4')
elif 1400 <= X < 1600:
    print('3')
elif 1600 <= X < 1800:
    print('2')
else:
    print('1') 400 <= X < 600 400 <= X 400 X 600 print('8') print '8' elif 600 <= X < 800:
    print('7') 600 <= X < 800 600 <= X 600 X 800 print('7') print '7' elif 800 <= X <1000:
    print('6') 800 <= X <1000 800 <= X 800 X 1000 print('6') print '6' elif 1000 <= X < 1200:
    print('5') 1000 <= X < 1200 1000 <= X 1000 X 1200 print('5') print '5' elif 1200 <= X < 1400:
    print('4') 1200 <= X < 1400 1200 <= X 1200 X 1400 print('4') print '4' elif 1400 <= X < 1600:
    print('3') 1400 <= X < 1600 1400 <= X 1400 X 1600 print('3') print '3' elif 1600 <= X < 1800:
    print('2') 1600 <= X < 1800 1600 <= X 1600 X 1800 print('2') print '2' print('1') print '1' X = int(input()) int(input()) X
X = int(input())

if 400 <= X < 600:
    print('8')
elif 600 <= X < 800:
    print('7')
elif 800 <= X <1000:
    print('6')
elif 1000 <= X < 1200:
    print('5')
elif 1200 <= X < 1400:
    print('4')
elif 1400 <= X < 1600:
    print('3')
elif 1600 <= X < 1800:
    print('2')
else:
    print('1')